前处理温度与氯化钠浓度对ZSM-5沸石能量耗散特性的影响

Effect of Pretreatment Temperature and Sodium Chloride Concentration on Energy Dissipation Characteristics of ZSM-5/Water System

高能量耗散密度材料的研发是防护工程领域的研究热点。纳米多孔材料具有超大的比表面积,其与液体的相互作用能够耗散大量外界能量,因此在车辆碰撞安全等领域具有出色的应用前景。本研究选取ZSM-5沸石/NaCl溶液系统,通过准静态实验研究该系统的能量耗散行为,并阐明其机理,同时参数化地研究了沸石的前处理温度（600－1100℃）及溶液的NaCl浓度（0－2 mol/kgH2O ）对系统能量耗散性能的影响。结果表明：该系统在准静态加载条件下具有较高的能量耗散密度,达到 12 J/g, 且可重复使用;该系统的工作性能可在较大范围内调节，其能量耗散密度与沸石前处理温度正相关，与NaCl浓度负相关；其工作压强与沸石前处理温度及NaCl浓度均正相关。本研究为开发智能、可控和高效的能量耗散系统提供了必要的基础理论与实验依据。

Research and development of new materials with high energy dissipation density is of intriguing interest in protective engineering fields. With ultra-large specific surface area, nanoporous material enables a high-efficiency energy dissipation system by interaction with liquids, which has a promising application in vehicle crash safety and anti-explosion for armored vehicles. In this paper, ZSM-5 zeolite / NaCl solution system, a mixture with ZSM zeolite immersed in sodium chloride solution was experimentally investigated. Its energy dissipation characteristics and working mechanism were explored by quasi-static compression experiments. Effect of pretreatment temperature of ZSM-5 zeolite （600-1100℃） and NaCl concentration of the solution （0-2 mol/kgH2O） were examined parametrically. Results show that the energy dissipation density of ZSM-5 zeolite / NaCl solution system can reach 12 J/g, as a reusable system under quasi-static loading. Its performance characteristics can be finely tuned by pretreatment of ZSM-5 and adding different concentrations of NaCl. The energy dissipation density increases with pretreatment temperature and decreases with NaCI concentration, while its working pressure increases with both of them. This work is of significance for the development of intelligent, controllable and efficient energy dissipation devices.